Home / 12,239.69-16,890.11-6,934.39

Finding the Fourth Proportional to 12,239.69, 16,890.11 and 6,934.39

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Solution

The fourth proportional to 12,239.69, 16,890.11 and 6,934.39 is: 9,569.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.69 : 16,890.11 = 6,934.39 : x
  2. Step 2: Convert to fraction form
    12,239.69/16,890.11 = 6,934.39/x
  3. Step 3: Cross multiply
    12,239.69x = 16,890.11 × 6,934.39
  4. Step 4: Simplify right side
    12,239.69x = 117,122,609.88
  5. Step 5: Solve for x
    x = 117,122,609.88/12,239.69
  6. Step 6: Final answer
    x = 9,569.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.